G.A. Merkel - Organ Sonatas

Gustav Adolf Merkel - Op. 30, Organ Sonata No. 1 in D minor (for 4 hands) w/ sheet music

Gustav Adolf Merkel - Op. 42, Organ Sonata No. 2 in G minor w/ sheet music

Gustav Adolf Merkel - Op. 115, Organ Sonata No. 4 in F minor w/ sheet music

Gustav Adolf Merkel - Op. 118, Organ Sonata No. 5 in D minor w/ sheet music

Gustav Adolf Merkel - Op. 137, Organ Sonata No. 6 in E minor w/ sheet music

Gustav Adolf Merkel - Op. 140, Organ Sonata No. 7 in A minor w/ sheet music

Gustav Adolf Merkel - Op. 178, Organ Sonata No. 8 in B minor w/ sheet music